Patent US3894527A successfully refreshed from Google Patents.
US3894527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cover for circulating fireplace registers
Assignee: Individual
•
Filing: 1973-09-04
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Granted: 1975-07-15
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Expires: 1993-09-04
Abstract
Abstract A cover for a small register on a circulating fireplace so to prevent thermal losses when a home is heated in winter or air conditioned during a summer, the device consisting of a plate which can be variously supported over the small register so to make an air tight seal, such as by use of magnets for attachment and the use of a gasket around its edge to prevent air leak.
Inventors
- 👤 John C Ickes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:32
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/191; F24B1/192
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
83 words
A cover for resiliently sealing a fireplace register made of magnetically permeable material, said cover comprising a magnetically permeable plate with a magnetic sealing material mounted at the inside face of said plate, said material comprising magnets formed of homogeneous relatively noncompressible metal and resiliently compressible material, said magnets being positioned further from the register than the compressible material so as to make physicla contact with the register after the compressible material makes contact with the register and is compressed into sealing contact.
Claim 2
Dependent Claim
83 words
A cover for resiliently sealing a fireplace register made of magnetically permeable material, said cover comprising a magnetically permeable plate with a magnetic sealing material mounted at the inside face of said plate, said material comprising magnets formed of homogeneous relatively noncompressible metal and resiliently compressible material, said magnets being positioned further from the register than the compressible material so as to make physicla contact with the register after the compressible material makes contact with the register and is compressed into sealing contact.
Claim 3
Dependent Claim
45 words
A cover as in claim 1 wherein the material comprises a resilient gasket mounted on the periphery of the inside cover face and a magnet of smaller thickness than the gasket whereby the gasket will first sealingly compress before the magnet can contact the register.
Claim 4
Dependent Claim
25 words
A cover as in claim 2 wherein the gasket is in the form of a plurality of suction cups with magnets mounted within the cups.
Claim 5
Dependent Claim
19 words
A cover as in claim 3 including means for increasing the air pressure differential action on the suction cup.
References Cited (Backward Citations)
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US3465536A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |